TY  - BOOK
AU  - Stacey,Peter B.
AU  - Koenig Pater D.
TI  - Cooperative breeeding in birds : : long term studies of ecology and behaviour / 
U1  - 598.256 COO 
PY  - 1990///
CY  - Cambridge : 
PB  - Cambridge University Press, 
KW  - Birds
KW  - Behaviour
KW  - Ecology
KW  - Sexual behavior in animals
N1  -  Includes index
ER  -